Valve device pressure stabilization test method and system

Abstract

The present application relates to the technical field of valve pressure stabilization testing, in particular to a valve device pressure stabilization testing method and system.A valve device pressure stabilization testing method includes: obtaining multiple sets of pre-test parameters of a valve device to be tested based on multiple sets of pre-test cycles executed; obtaining a target number of liquid supplement components based on a mapping relationship constructed based on the multiple sets of pre-test parameters; supplementing liquid based on the liquid supplement components with the target number, continuously supplying liquid by a liquid supply component, and continuously inputting liquid to the valve device to be tested at a preset pressure value; wherein the supply flow of a single liquid supply component and / or a single liquid supplement component is less than the output flow of the valve device to be tested; and obtaining measured parameters of the valve device to be tested based on the continuous input of liquid to the valve device to be tested at the preset pressure value.This solves the problem of how to use small-flow liquid supplement and supply devices to meet the stable pressure requirements of high-flow testing environments.

Description

Technical Field

[0001] This invention relates to the field of valve pressure stabilization testing technology, and more specifically, to a valve device pressure stabilization testing method and system. Background Technology

[0002] In related technologies, valve factory inspection typically employs a fluid medium pressure holding test to verify its sealing performance and pressure holding capability under a specified pressure. One existing testing method uses liquid as the test medium: a liquid supply pump injects the liquid test medium into the valve's internal cavity from the inlet, filling the cavity before outputting it from the outlet, maintaining stable internal pressure throughout the test. Pressure changes within the valve cavity are read using pressure sensing elements during the test to determine whether its sealing and pressure holding capabilities are up to standard.

[0003] In practical applications, when the output flow rate of the valve device under test is large, the liquid supply pump must have a large flow rate supply capacity matching the output flow rate to ensure stable internal pressure. However, under the precision testing conditions of low pressure and low flow rate, the pressure control accuracy and stability of a large flow pump are often difficult to guarantee, and problems such as poor liquid supply and low efficiency are prone to occur during the connection of test cycles. Therefore, how to use a small flow rate liquid replenishment and supply device to meet the stable pressure requirements of a large flow rate testing environment has become an urgent technical problem to be solved in this application. Summary of the Invention

[0004] To address the problem of how to use a small-flow replenishment and supply device to meet the stable pressure requirements of a large-flow testing environment, this invention provides a valve device pressure stabilization testing method and system.

[0005] In a first aspect, the present invention provides a method for testing the pressure stabilization of a valve device, comprising:

[0006] Based on the execution of multiple sets of pre-test cycles, multiple sets of pre-test parameters of the valve device under test are obtained; wherein, the pre-test parameters include the pre-test stabilization value and the pre-test stabilization time;

[0007] Based on the mapping relationship constructed from multiple sets of pre-test parameters, the target number of fluid replenishment components is obtained; wherein, the mapping relationship represents the correspondence between the pre-test stabilization value, the pre-test stabilization time, and the target number of fluid replenishment components after the pre-test stabilization value is reached within the pre-test stabilization time.

[0008] Based on the target number of the replenishing components, the replenishing and supplying components continuously supply liquid, so that the liquid is continuously input into the valve device under test at a preset pressure value; wherein, the supply flow rate of a single supply component and / or a single replenishing component is less than the output flow rate of the valve device under test;

[0009] Based on the continuous input of liquid at the preset pressure value into the valve device under test, the measured parameters of the valve device under test are obtained.

[0010] Optionally, it also includes:

[0011] Based on the obtained measured parameters, the valve device under test is disconnected from the liquid supply component and the liquid replenishment component for a preset time.

[0012] Obtain the remaining capacity within the target number of replenishment components, and control the liquid supply component to continuously replenish the liquid to the replenishment components according to a preset rule within the preset time period; wherein, the preset rule includes sorting the target number of replenishment components in ascending order, and replenishing the liquid in ascending order.

[0013] Optionally, the continuous supply of liquid by the replenishment and supply components based on the target number of replenishment components, so that the liquid is continuously input into the valve device under test at a preset pressure value, includes:

[0014] Based on a target quantity of 1, the replenishment component near the valve device under test replenishes the liquid supply channel of the supply component;

[0015] Based on the replenishment component replenishing the liquid supply channel of the liquid supply component and the continuous liquid supply of the liquid supply component, the liquid is continuously input into the valve device under test at the preset pressure value.

[0016] Optionally, the continuous supply of liquid by the replenishment and supply components based on the target number of replenishment components, so that the liquid is continuously input into the valve device under test at a preset pressure value, includes:

[0017] Based on a target quantity greater than 3, N replenishing components close to the valve device under test and M replenishing components far from the valve device under test are used to replenish the supply channel of the supply component; where N+K equals the number of replenishing components close to the valve device under test, and M+K equals the number of replenishing components far from the valve device under test; N, M, and K are constants greater than or equal to 1;

[0018] Based on the replenishment component replenishing the liquid supply channel of the liquid supply component and the continuous liquid supply of the liquid supply component, the liquid is continuously input into the valve device under test at the preset pressure value.

[0019] Optionally, when the replenishing component replenishes the liquid supply component, the replenishing pressure of the replenishing component is greater than or equal to the instantaneous pressure at the connection point between the liquid supply component and the replenishing component, and the replenishing component is configured to replenish the liquid supply component when the instantaneous pressure is lower than the replenishing pressure.

[0020] Optionally, the pressure ratio of the liquid in the replenishment component to the liquid in the supply component is 0.7-0.8, and the pressure loss from the supply component to the connection point ensures that the instantaneous pressure at the connection point is not greater than the replenishment pressure of the replenishment component.

[0021] Optionally, the process of obtaining multiple sets of pre-test parameters for the valve device under test based on the execution of multiple sets of pre-test cycles includes:

[0022] Based on the liquid being injected into the valve device under test for a preset test duration, at least a portion of the liquid fills the valve device under test and at least a portion of the gas is squeezed out of the valve device under test;

[0023] Based on the extrusion of at least part of the gaseous material from the valve device under test, multiple sets of pre-test parameters of the valve device under test are obtained; wherein, the valve device under test has a first test pressure inside.

[0024] Optionally, the process of obtaining multiple sets of pre-test parameters for the valve device under test based on the execution of multiple sets of pre-test loops further includes:

[0025] Based on the extrusion of at least a portion of the gaseous material from the valve device under test and the acquisition of the pre-test parameters, the mapping relationship is constructed and the number of tests for the replenishment component is obtained based on the mapping relationship;

[0026] The replenishment component replenishes liquid based on the number of tests, and the supply component continuously supplies liquid, so that the liquid is continuously input into the valve device under test at the preset pressure value; wherein, the valve device under test has a second test pressure inside;

[0027] Because the second test pressure is greater than the first test pressure, the pressure unit inside the valve device under test undergoes elastic deformation.

[0028] The pressure unit inside the valve device under test undergoes elastic deformation, and at least a portion of the gaseous material inside the valve device under test is discharged from the valve device under test.

[0029] Based on the extrusion of at least a portion of the gaseous material from the valve device under test, the pre-test parameters of the valve device under test are obtained.

[0030] In a second aspect, the present invention provides a valve device pressure stabilization test system, applicable to any optional valve pressure stabilization test method of the first aspect, wherein the valve device pressure stabilization test system comprises:

[0031] The valve device under test includes a housing unit and a pressure unit; the housing unit includes a housing portion and an outlet port, an inlet port, and a storage chamber formed within the housing portion; wherein the outlet port and the inlet port can communicate with the storage chamber;

[0032] A liquid supply assembly includes a liquid supply unit and a liquid supply passage connected to the liquid supply unit;

[0033] A fluid replenishment assembly includes a fluid replenishment unit and a fluid replenishment passage connected to the fluid replenishment unit; wherein the fluid supply passage is connected to the fluid replenishment passage.

[0034] The liquid outlet assembly includes a liquid outlet passage and a liquid outlet valve disposed on the liquid outlet passage; the two ends of the liquid outlet passage are respectively connected to the liquid supply passage and the liquid inlet of the valve device under test; in the preset state of the valve device pressure stabilization test system, the liquid supply assembly and / or the liquid replenishment assembly provide liquid to the liquid storage chamber, and the liquid in the liquid storage chamber can flow out from the liquid outlet, and the liquid acts on the pressure unit at a preset pressure value.

[0035] Optionally, the pressure unit includes a pressure section and a support section, a first elastic section, and a second elastic section, all sleeved on the pressure section and located within the liquid storage cavity; the support section is located between the first elastic section and the second elastic section; the second elastic section is connected to the pressure section and the housing section respectively; the first elastic section has a gap between its radially distant periphery and the housing section along the axial direction; in the preset state, the liquid acts on the pressure section at the preset pressure value, causing the pressure section to move along the pressure direction and causing the first elastic section to deform along the outflow direction along its peripheral side away from the pressure section, and the gap gradually decreases; wherein the pressure direction is opposite to the outflow direction.

[0036] To address the problem of how to use a small-flow replenishment and supply device to meet the stable pressure requirements of a high-flow-rate testing environment, this invention has the following advantages:

[0037] Multiple sets of pre-test parameters are obtained by executing multiple pre-test cycles for the valve under test. Based on these parameters, a mapping relationship is constructed between the pre-test stabilization pressure value, pre-test stabilization time, and the target number of replenishment components. This allows the target number of replenishment components to be determined according to the actual operating conditions of the valve under test, ensuring that the replenishment capacity matches the actual test requirements and reducing situations of insufficient or excessive replenishment. Based on the target number of replenishment components, continuous liquid supply from the supply components ensures that the liquid is continuously input into the valve under test at a preset pressure value. Since the supply flow rate of a single supply component and / or a single replenishment component is less than... The output flow rate of the valve under test is achieved through the coordinated operation of multiple small-flow components to meet the high-flow output. This minimizes the impact of unstable control of a single high-flow pump under low-pressure conditions or insufficient liquid supply from a small-flow pump on the test pressure. By continuously inputting liquid at a preset pressure value into the valve under test, the measured parameters are obtained, allowing for stable pressure testing of the valve under test at a stable preset pressure, thus improving the reliability of the test results. Overall, the above solution uses small-flow replenishment and supply devices to meet the stable liquid supply requirements of high-flow testing environments, reducing liquid consumption and testing costs, and improving testing efficiency. Attached Figure Description

[0038] Figure 1 A schematic flowchart of a valve device pressure stabilization test method according to one embodiment is shown;

[0039] Figure 2 A schematic plan view of a valve device pressure stabilization test system according to one embodiment is shown;

[0040] Figure 3 A three-dimensional structural schematic diagram of a valve device pressure stabilization test system according to one embodiment is shown;

[0041] Figure 4 A cross-sectional view of a valve device pressure stabilization test system according to one embodiment is shown;

[0042] Figure 5 A partial view of the first elastic part of a valve device pressure stabilization test system according to an embodiment is shown when it deforms.

[0043] Figure label:

[0044] 10. Liquid supply assembly; 11. Liquid supply unit; 12. Liquid supply passage; 20. Liquid replenishment assembly; 21. Liquid replenishment unit; 22. Liquid replenishment passage; 30. Liquid outlet assembly; 31. Liquid outlet valve; 32. Liquid outlet passage; 40. Valve device to be tested; 41. Housing unit; 411. Housing part; 412. Liquid outlet hole; 413. Liquid inlet hole; 414. Liquid storage chamber; 42. Pressure unit; 421. Support part; 422. Pressure part; 423. First elastic part; 424. Second elastic part; 425. Third elastic part; 426. Sealing part. Detailed Implementation

[0045] The invention will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are described merely to enable those skilled in the art to better understand and thus implement the invention, and are not intended to imply any limitation on the scope of the invention.

[0046] As used herein, the term "comprising" and its variations are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "at least partially based on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation or to be constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientations or positional relationships; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this invention according to the specific circumstances. In addition, the terms "installed", "set", "equipped with", "connected", and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Furthermore, the terms "first," "second," etc., are mainly used to distinguish different devices, elements, or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0047] In related technologies, pressure stabilization testing of valve devices typically involves a single liquid supply pump continuously supplying liquid to the inlet of the valve device under test (40) via pipeline, discharging it from the outlet, and maintaining the target pressure within the cavity to verify sealing and pressure-holding performance. When the output flow rate of the valve device under test (40) is large, a single liquid supply pump must supply at a high flow rate to maintain pressure stability. However, under precision testing conditions with low pressure and low flow rate, pressure control of a high-flow-rate pump is often difficult to stabilize, and pressure needs to be re-established after each test, resulting in significant liquid consumption and long waiting times, leading to low testing efficiency. Therefore, the present invention will illustrate a solution to this technical problem through the following embodiments.

[0048] Example 1

[0049] Please refer to Figure 1 This embodiment provides a valve device pressure stabilization test method, including steps S10-S40:

[0050] In step S10, multiple sets of pre-test cycle processes are executed to obtain multiple sets of pre-test parameters of the valve device 40 under test. The pre-test parameters include the pre-test stabilization value and the pre-test stabilization time, which are used to provide basic data for subsequently determining the number of liquid replenishment components 20.

[0051] In step S20, a mapping relationship is constructed based on multiple sets of pre-test parameters to obtain the target number of replenishing components 20. This mapping relationship represents the correspondence between the pre-test stabilizing pressure value, the pre-test stabilizing pressure time, and the target number of replenishing components 20 after the pre-test stabilizing pressure value is reached within the pre-test stabilizing pressure time. Thus, the required number of replenishing components 20 is determined according to the actual high-flow-rate operating conditions of the valve device 40 under test, so that the target number of replenishing components 20 is not a fixed value, but varies with the time required for the valve device 40 under test to reach the pre-test stabilizing pressure value and the pressure holding capability.

[0052] In step S30, based on the target number of replenishing components 20, replenishing and supplying components 10 continuously supply liquid, so that the liquid is continuously input into the valve device under test 40 at a preset pressure value. Since the supply flow rate of a single supply component 10 and / or a single replenishing component 20 is less than the output flow rate of the valve device under test 40, multiple small flow components can work together to meet the large flow output. It is not easy to affect the test pressure due to the unstable control of a single large flow pump under low pressure conditions. The supply component 10 continuously supplies liquid to provide the basic pressure and flow rate, and the replenishing component 20 provides dynamic replenishment and pressure compensation. The combination of the two allows the liquid to be continuously input into the valve device under test 40 at a preset pressure value.

[0053] In step S40, based on the liquid, a preset pressure value is continuously input into the valve device 40 under test to obtain the measured parameters of the valve device 40 under test, thereby completing the pressure stabilization test with a stable preset pressure.

[0054] Specifically, the mapping relationship can be in the form of tables or lookup tables. During the execution of multiple pre-test cycles, the number of replenishing components 20 required to reach the stabilization value within the stabilization time is obtained under the condition of meeting the flow requirements of different preset stabilization values. The above parameters are recorded in a table. By looking up the table, the target number of replenishing components 20 is obtained by referring to the flow requirements of the preset stabilization values ​​of the valve device 40 to be tested for different specifications.

[0055] For example, multiple sets of pre-test cycles can be continuous cycles, intermittent cycles, step-up pressure cycles, or step-down pressure cycles; the replenishment component 20 can be a container, pump, accumulator, branch pipeline, or group valve group; the target quantity can be dynamically adjusted, adjusted in stages, or adjusted according to a preset pressure value range; the preset pressure value can be a constant value, a step value, a pulse value, or a value that changes over time; the measured parameters can be continuously acquired, timed sampling, or event-triggered acquisition.

[0056] Understandably, multiple pre-test cycles refer to the process of repeatedly performing pre-tests and collecting at least two sets of pre-test parameters; the pre-test stabilized pressure value refers to the pressure value reached and maintained by the valve device 40 under test during the pre-test; the pre-test stabilization time refers to the time required to reach the pre-test stabilized pressure value. The actual stabilized pressure value refers to the pressure value reached and maintained by the valve device 40 under test during the actual test; the actual stabilization time refers to the time required to reach the actual stabilized pressure value.

[0057] Furthermore, a valve device pressure stabilization test method further includes steps S50-S60, which are executed sequentially as steps S10, S20, S30, S40, S50, and S60, wherein:

[0058] In step S50, based on the acquisition of measured parameters, the valve device under test 40 is disconnected from the liquid supply component 10 and the liquid replenishment component 20 for a preset time. This ensures that the isolation action occurs after the acquisition of measured parameters, avoiding impact on the measured stable pressure value and the measured stable pressure time. The preset disconnection time isolates the valve device under test 40 from the liquid replenishment component 20 and the liquid supply component 10, and blocks the liquid supply from the liquid replenishment component 20 and the liquid supply component 10. This provides conditions for the rebound of the first elastic part 423 in the valve device under test 40. That is, after the liquid loses continuous replenishment, the internal pressure of the valve device under test 40 decreases. The first elastic part 423 in the valve device under test 40 gradually recovers its elastic deformation without continuous pressure. The gap between the first elastic part 423 and the housing part 411 gradually changes from closed to open. This also provides time for the subsequent recovery of the capacity of the liquid replenishment component 20, allowing the rebound of the valve device under test 40 and the recovery of the liquid replenishment component 20 to occur in parallel. The preset duration can be the duration for the first elastic part 423 and the housing part 411 to close until an initial gap is formed, depending on the actual application.

[0059] Understandably, during the process of obtaining the measured parameters, the valve device 40 under test maintains a stable pressure to ensure the accuracy of the measured results.

[0060] In step S60, the remaining capacity of the target number of replenishment components 20 is obtained, and the liquid supply component 10 is controlled to continuously replenish the liquid replenishment components 20 with liquid according to a preset rule within a preset time period. The preset rule includes sorting the target number of replenishment components 20 in ascending order and replenishing liquid in ascending order, so that the liquid storage of the replenishment components 20 is restored in an orderly manner during the disconnection period after each test. The replenishment components 20 with smaller remaining capacity are restored first, reducing the risk of insufficient pressure during the next round of replenishment, so that the next round of testing can be carried out continuously and reducing the waiting time.

[0061] This is understandable, please refer to it. Figure 2 , Figure 4 and Figure 5 During the pre-test and actual test, the liquid supply component 10 continuously supplies liquid to the valve device under test 40. The liquid replenishment component 20 replenishes liquid according to actual needs and can merge with the liquid output from the liquid supply component 10 and be input into the valve device under test 40 together. When the liquid is not input into the valve device under test 40 or the liquid does not reach the preset pressure value, there is a gap between the first elastic part 423 and the housing part 411 in the valve device under test 40. The liquid after merging is partially stored in the liquid storage chamber 414, and at least part of it flows through the gap and flows out from the liquid outlet 412. As the pressure unit 42 in the valve device under test 40 receives the preset pressure, the pressure unit 42 moves along the pressure direction and causes the first elastic part 423 to undergo elastic deformation. The far end of the first elastic part 423 away from the pressure unit 42 gradually deforms in the outflow direction, so that the gap gradually decreases until it is closed. When the gap is 0, the path of liquid flow to the outlet 412 is blocked, the internal pressure rises and gradually stabilizes, thus testing the sealing capability of the valve device 40 under test. After the pre-test parameters and actual test parameters are recorded, the outlet valve 31 is activated, thereby stopping the liquid from entering the storage chamber 414. The pressure unit 42 loses its pressure support, the deformation of the first elastic part 423 gradually recovers, and the gap between the first elastic part 423 and the housing part 411 gradually recovers, allowing the next cycle test to proceed.

[0062] Further, in step S30, the replenishment component 20 replenishes liquid based on the target quantity, and the liquid supply component 10 continuously supplies liquid, so that the liquid is continuously input into the valve device 40 under test at a preset pressure value, including steps S31-S32:

[0063] In step S31, when the target quantity is equal to 1, the replenishing component 20 close to the valve device under test 40 replenishes the liquid supply channel of the liquid supply component 10. This operation can shorten the replenishing path when only one replenishing component 20 is needed, reduce the pressure loss along the path and the replenishing response lag. The single replenishing component 20, in conjunction with the continuous liquid supply of the liquid supply component 10, allows the liquid to be continuously input into the valve device under test 40 at a preset pressure value, thereby maintaining the pressure stability in the liquid supply channel even when the number of replenishing components 20 is small.

[0064] In step S32, based on the replenishment component 20 replenishing the liquid supply channel of the liquid supply component 10 and the continuous liquid supply of the liquid supply component 10, the liquid is continuously input into the valve device under test 40 at a preset pressure value. The replenishment component 20, which is close to the valve device under test 40, can quickly compensate the pressure of the liquid supply channel of the liquid supply component 10, avoiding the problem of insufficient instantaneous pressure, slow pressure recovery, or prolonged pressure stabilization time caused by remote liquid replenishment.

[0065] Furthermore, in step S30, the replenishing component 20 replenishes liquid based on the target quantity, and the supply component 10 continuously supplies liquid, so that the liquid is continuously input into the valve device 40 under test at a preset pressure value. This includes steps S33-S34. Steps S31-S32 and S33-S34 are two embodiments, and one of them can be executed.

[0066] In step S33, when the target quantity is greater than 3, N replenishing components 20 close to the valve device under test 40 and M replenishing components 20 far from the valve device under test 40 are used to replenish the liquid supply channel of the liquid supply component 10. This can form a combination of near-end rapid response and far-end capacity replenishment when there are a large number of replenishing components 20. Here, N+K equals the number of replenishing components 20 close to the valve device under test 40, and M+K equals the number of replenishing components 20 far from the valve device under test 40. N, M, and K are constants greater than or equal to 1. This ensures that K replenishing components 20 that are not currently replenishing are retained in both the close-to and far-from replenishing components 20, which is convenient for standby, rotation, cleaning, or fault replacement. By arranging the replenishing components 20 close to and far from the valve device under test 40 in separate zones and replenishing them in a coordinated manner, it is ensured that at least one replenishing component 20 close to the valve device under test 40 can still replenish the liquid supply channel in the next pre-test cycle, thereby improving the continuity of the cycle test.

[0067] In step S34, the liquid supply channel of the liquid supply component 10 is replenished by the liquid replenishment component 20 and the liquid supply component 10 is continuously supplied, so that the liquid is continuously input into the valve device 40 under test at a preset pressure value, which can reduce the risk of local congestion caused by replenishing all near-end liquid and pressure lag caused by replenishing all far-end liquid.

[0068] Understandable, such as Figure 2Based on a target quantity greater than 3, N replenishing components 20 close to the valve device under test 40 and M replenishing components 20 far from the valve device under test 40 are obtained, and the replenishing components 20 are grouped according to their spatial positions; N+K equals the number of replenishing components 20 close to the valve device under test 40, and M+K equals the number of replenishing components 20 far from the valve device under test 40, so that the relationship between the number of replenishing components 20 close to and far from the valve device under test 40 is clear; the replenishing components 20 replenish the liquid supply channel of the liquid supply component 10 and the liquid supply component 10 continuously supply liquid, so that the liquid is continuously input into the valve device under test 40 at a preset pressure value, realizing the coordination of near-end pressure stabilization, far-end replenishment and basic liquid supply of the liquid supply component 10.

[0069] For example, N near the valve device under test 40 refers to the number of liquid replenishment components 20 near the valve device under test 40 that participate in the current liquid replenishment; M far from the valve device under test 40 refers to the number of liquid replenishment components 20 far from the valve device under test 40 that participate in the current liquid replenishment; K refers to the number of liquid replenishment components 20 near the valve device under test 40 and liquid replenishment components 20 far from the valve device under test 40 that do not participate in the current liquid replenishment.

[0070] Furthermore, in the replenishment action of step S30, when the replenishment component 20 replenishes the liquid supply component 10, the replenishment pressure of the replenishment component 20 is greater than or equal to the instantaneous pressure at the connection position between the replenishment component 20 and the liquid supply component 10. The replenishment component 20 is configured to replenish the liquid supply component 10 when the instantaneous pressure is lower than the replenishment pressure. When the instantaneous pressure is lower than the replenishment pressure, the replenishment component 20 replenishes the liquid in time, which can maintain the pressure of the liquid supply channel of the liquid supply component 10, so that the liquid is continuously input into the valve device 40 under test at a preset pressure value.

[0071] Furthermore, in the replenishment operation of step S30, the pressure ratio of the liquid in the replenishment component 20 to the liquid in the supply component 10 is maintained at 0.7-0.8, and the pressure loss from the supply component 10 to the connection position ensures that the instantaneous pressure at the connection position is not greater than the replenishment pressure of the replenishment component 20, thereby making the replenishment pressure of the replenishment component 20 stably higher than the instantaneous pressure of the supply channel, and making the replenishment operation more reliable.

[0072] Understandably, the liquid in the supply component 10 will experience pressure loss as it passes through the passage, valves, elbows, throttling devices, and other structures at the connection point. The instantaneous pressure at the connection point is lower than the pressure inside the supply component 10. The ratio of the liquid pressure in the replenishment component 20 to the liquid pressure in the supply component 10 is 0.7-0.8, ensuring that the replenishment pressure of the replenishment component 20 is within a suitable range. The pressure loss from the supply component 10 to the connection point ensures that the instantaneous pressure at the connection point is not greater than the replenishment pressure of the replenishment component 20, creating a positive pressure difference from the replenishment component 20 to the supply component 10, thus satisfying the replenishment conditions.

[0073] Furthermore, step S10, based on the execution of multiple sets of pre-test loops, acquires multiple sets of pre-test parameters for the valve device under test 40, including steps S11-S12:

[0074] In step S11, the liquid is injected into the valve device 40 under test for a preset test duration. This allows a large amount of liquid to be filled into the storage chamber 414 and at least some liquid to be retained in the first stage of the pre-test cycle, reducing the need to start filling from 0 in subsequent tests, thereby improving detection efficiency and saving liquid waste. At the same time, a large amount of air can be expelled in this process, avoiding the influence of air on the accuracy of the results.

[0075] In step S12, based on the extrusion of at least a portion of the gaseous material from the valve device 40 under test, pre-test parameters of the valve device 40 are obtained. The valve device 40 has a first test pressure, enabling the pre-test stable pressure value and pre-test stable pressure time to be obtained under conditions where the influence of the gaseous material is reduced. Compared to the pressure compressibility, stable pressure value fluctuation, and stable pressure time distortion caused by residual gaseous material, this improves the reliability of the pre-test parameters. Specifically, in this pre-test stage, a large amount of liquid is first filled into the valve device 40 under test, and at least a portion of the liquid is retained, reducing the need for subsequent actual testing to start filling from zero. Simultaneously, a large amount of air is expelled, thereby reducing the influence of air on the test results, which is beneficial for improving subsequent detection efficiency and saving liquid consumption.

[0076] Understandably, the first stage has too many factors affecting the results. Gaseous substances are compressible, and residual gaseous substances in the valve device under test 40 will absorb pressure fluctuations, delay pressure transmission, and cause unstable pressure values. Liquid substances are injected into the valve device under test 40 for a preset test duration, so that the liquid substances fill at least part of the space inside the valve device under test 40 and squeeze at least part of the gaseous substances out of the valve device under test 40. The pressure may be insufficient due to the above factors, which may cause the gap between the first elastic part 423 and the housing part 411 to fail to close. Pre-testing by the number of cycles may affect the accuracy of the pre-test pressure stabilization time result due to too much air or too long liquid filling time. Therefore, the first stage limits the filling to a preset test duration. The valve device under test 40 has a first test pressure, so that the pre-test parameters are obtained under the first test pressure, which can reflect the pressure holding ability of the valve device under test 40 after exhaust.

[0077] Furthermore, step S10, based on the execution of multiple sets of pre-test loops, acquires multiple sets of pre-test parameters for the valve device under test 40, including steps S13-S17:

[0078] In step S13, based on the pre-test parameters obtained by at least partially extruding the gaseous material from the valve device 40 under test, a mapping relationship is constructed and the test quantity of the liquid replenishment component 20 is obtained based on the mapping relationship. In the second stage of the pre-test cycle, when most of the factors affecting the results have been resolved in the first stage and only a small amount of air remains inside, the liquid replenishment component 20 is replenished with the test quantity, and the liquid supply component 10 continuously supplies liquid, so that the liquid is continuously input into the valve device 40 under test at a preset pressure value, and the valve device 40 under test has a second test pressure inside.

[0079] In step S14, based on the number of tests, the liquid replenishment component 20 replenishes the liquid and the liquid supply component 10 continuously supplies the liquid, so that the liquid is continuously input into the valve device under test 40 at a preset pressure value. The valve device under test 40 has a second test pressure inside, so that the test is carried out under higher pressure conditions.

[0080] In step S15, based on the fact that the second test pressure is greater than the first test pressure, the pressure unit 42 inside the valve device under test 40 undergoes elastic deformation. The deformation of the pressure unit 42 changes the internal volume and pressure response of the valve device under test 40, causing at least some gaseous material to be discharged from the valve device under test 40. When the gap closes, the internal pressure will rise to a preset pressure value and stabilize. The first elastic sheet and the pressing part will also vibrate during the movement, causing a small amount of gas to be discharged, further improving the test accuracy. Based on the discharge of gaseous material, the pre-test parameters are obtained, making the pre-test parameters closer to the actual stable pressure state of the valve device under test 40. The number of tests of the liquid replenishment component 20 is used to verify the mapping relationship, and the number of tests can provide an intermediate basis for the subsequent target number.

[0081] In step S16, the pressure unit 42 inside the valve device 40 under test undergoes elastic deformation, and at least part of the gaseous material inside the valve device 40 under test is discharged from the valve device 40 under test. The first elastic sheet and the pressing part vibrate during the movement, causing a small amount of gas inside to be discharged, further improving the test accuracy.

[0082] In step S17, based on the extrusion of at least part of the gaseous material from the valve device 40 under test, preliminary test parameters of the valve device 40 are obtained. In this preliminary test stage, most of the factors affecting the results have been resolved in the previous stage, leaving only a small amount of air inside. The internal pressure rises to the point that the gap of the pressure unit 42 closes. The pressure unit 42 vibrates during elastic deformation, further expelling the small amount of gas inside, thereby improving the test accuracy.

[0083] Example 2

[0084] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5This invention provides a valve device pressure stabilization test system, applicable to any of the valve device pressure stabilization test methods in Embodiment 1. In the valve device pressure stabilization test system, the valve device under test 40, the liquid supply component 10, the liquid replenishment component 20, and the liquid outlet component 30 together constitute a test circuit. The valve device under test 40 includes a housing unit 41 and a pressure unit 42, used to provide the object under test and sense pressure. The liquid supply component 10 is used to continuously supply liquid to the system. The liquid replenishment component 20 is used to replenish liquid to the liquid supply component 10 during the test. The liquid outlet component 30 is used to discharge liquid and control the discharge on / off.

[0085] Specifically, the housing unit 41 of the valve device under test 40 includes a housing portion 411 and a liquid outlet 412, a liquid inlet 413, and a liquid storage chamber 414 formed within the housing portion 411. Both the liquid outlet 412 and the liquid inlet 413 can communicate with and be switched on and off the liquid storage chamber 414. Liquid enters the liquid storage chamber 414 through the liquid inlet 413 and flows out through the liquid outlet 412. The liquid supply assembly 10 includes a liquid supply unit 11 and a liquid supply passage 12 communicating with the liquid supply unit 11. The liquid supply unit 11 can be a liquid pump, a booster tank, or a constant pressure liquid supply device, used to generate and maintain the liquid supply pressure. The liquid replenishment assembly 20 includes a liquid replenishment unit 21 and a liquid replenishment passage 22 connected to the liquid replenishment unit 21. The liquid replenishment unit 21 can be a liquid replenishment pump, a liquid replenishment tank, or a pressurization and energy replenishment device, used to replenish liquid to the liquid replenishment passage 22. The liquid supply passage 12 is connected to the liquid replenishment passage 22, so that the liquid replenishment assembly 20 can replenish liquid to the liquid supply passage 12. The liquid outlet assembly 30 includes a liquid outlet passage 32 and a liquid outlet valve 31 disposed on the liquid outlet passage 32. The liquid outlet valve 31 can be a shut-off valve, a solenoid valve, or a check valve, etc., which can realize on-off control and is used to open when liquid needs to be discharged and shut off when pressure is maintained. The two ends of the liquid outlet passage 32 are respectively connected to the liquid supply passage 12 and the liquid inlet 413 of the valve device under test 40, so that the liquid supply assembly 10 and / or the liquid replenishment assembly 20 provide liquid to the liquid storage chamber 414 in a preset state. The liquid in the liquid storage chamber 414 flows out from the liquid outlet 412 and acts on the pressure unit 42 with a preset pressure value, so that the pressure unit 42 senses the pressure change in the valve device under test 40, thereby completing the pressure stabilization test.

[0086] In the preset state, the liquid acts on the pressure part 422 at a preset pressure value, causing the pressure part 422 to move along the pressure direction and causing the first elastic part 423 to deform away from the periphery of the pressure part 422 along the outflow direction, and the gap gradually decreases. This gap is the path that the first elastic part 423 and the shell part 411 exist axially in the liquid storage cavity 414, allowing the liquid to flow to the liquid outlet 412. When the gap is 0, the gap blocks the path of the liquid to the liquid outlet 412. The first elastic part 423 can improve the transmission and sensing sensitivity of the liquid pressure. The pressure unit 42 includes a pressure section 422 and a support section 421, a first elastic section 423, and a second elastic section 424, all sleeved on the pressure section 422 and located within the liquid storage cavity 414. The support section 421 is located between the first elastic section 423 and the second elastic section 424, providing axial support for the first elastic section 423. The second elastic section 424 is connected to the pressure section 422 and the housing section 411 respectively, and is used to provide elastic reset when the pressure section 422 moves. The first elastic section 423 and the second elastic section 424 can be elastically deformable elements such as elastic diaphragms, springs, or elastic sealing rings. The first elastic section 423 has a gap between its radially away periphery from the pressure section 422 and the housing section 411 along the axial direction. This gap gradually decreases under a preset pressure. The liquid acts on the pressure section 422 at a preset pressure value, with the pressure direction opposite to the outflow direction, causing the pressure section 422 to move away from the outflow direction under the action of the liquid, thereby causing the first elastic section 423 to deform to sense the pressure change.

[0087] In other embodiments, the pressure unit 42 further includes a third elastic portion 425, which is sleeved on the pressure portion 422 and located on the side of the support portion 421 opposite to the first elastic portion 423. The third elastic portion 425 is used to provide additional elastic support when the pressure portion 422 moves, so that the pressure unit 42 has a smoother deformation response in different pressure ranges.

[0088] In some other embodiments, the pressure unit 42 is further provided with a sealing part 426, which is disposed around the second elastic part 424 and the housing part 411 to seal the gap between the second elastic part 424 and the housing part 411, thereby reducing the leakage of liquid through the gap.

[0089] In other embodiments, the valve device 40 under test is further provided with a sensor, which is used to detect pressure, flow rate or liquid level parameters in the valve device 40 under test and transmit the detection signal to the test control unit so as to obtain the pre-test parameters and the actual measured parameters.

[0090] Please refer to Figure 2In this embodiment, during testing and actual measurement, the valve device pressure stabilization test system first supplies liquid to the inlet 413 of the valve device 40 under test through the liquid supply passage 12 and the liquid outlet passage 32. The liquid enters the storage chamber 414 and flows out from the liquid outlet 412, acting on the pressure unit 42 with a preset pressure value. When liquid needs to be replenished, the replenishment component 20 replenishes liquid to the supply passage 12 through the replenishment passage 22. The liquid supply component 10 continuously supplies liquid to maintain the pressure stability in the storage chamber 414. When it is necessary to depressurize multiple times for actual measurement, maintenance, or replacement of the valve device 40 under test, the valve device 40 under test is disconnected from the liquid supply component 10 and the replenishment component 20, and the liquid outlet valve 31 is opened to discharge the liquid in the storage chamber 414, thereby facilitating disassembly and cleaning.

[0091] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made in form and detail without departing from the scope of the present invention.

Claims

1. A method for testing the pressure stabilization of a valve device, characterized in that, include: Based on the execution of multiple sets of pre-test cycles, multiple sets of pre-test parameters of the valve device under test are obtained; wherein, the pre-test parameters include the pre-test stabilization value and the pre-test stabilization time; Based on the mapping relationship constructed from multiple sets of pre-test parameters, the target number of fluid replenishment components is obtained; wherein, the mapping relationship represents the correspondence between the pre-test stabilization value, the pre-test stabilization time, and the target number of fluid replenishment components after the pre-test stabilization value is reached within the pre-test stabilization time. Based on the target number of the replenishing components, the replenishing and supplying components continuously supply liquid, so that the liquid is continuously input into the valve device under test at a preset pressure value; wherein, the supply flow rate of a single supply component and / or a single replenishing component is less than the output flow rate of the valve device under test; Based on the continuous input of liquid material at the preset pressure value into the valve device under test, the measured parameters of the valve device under test are obtained.

2. The valve device pressure stabilization test method according to claim 1, characterized in that, Also includes: Based on the obtained measured parameters, the valve device under test is disconnected from the liquid supply component and the liquid replenishment component for a preset time. Obtain the remaining capacity within the target number of replenishment components, and control the liquid supply component to continuously replenish the liquid to the replenishment components according to a preset rule within the preset time period; wherein, the preset rule includes sorting the target number of replenishment components in ascending order, and replenishing the liquid in ascending order.

3. The valve device pressure stabilization test method according to claim 1, characterized in that, The continuous supply of liquid by the replenishment and supply components based on the target number of replenishment components, so that the liquid is continuously input into the valve device under test at a preset pressure value, includes: Based on a target quantity of 1, the replenishment component near the valve device under test replenishes the liquid supply channel of the supply component; Based on the replenishment component replenishing the liquid supply channel of the liquid supply component and the continuous liquid supply of the liquid supply component, the liquid is continuously input into the valve device under test at the preset pressure value.

4. The valve device pressure stabilization test method according to claim 1, characterized in that, The continuous supply of liquid by the replenishment and supply components based on the target number of replenishment components, so that the liquid is continuously input into the valve device under test at a preset pressure value, includes: Based on a target quantity greater than 3, N replenishing components close to the valve device under test and M replenishing components far from the valve device under test are used to replenish the supply channel of the supply component; where N+K equals the number of replenishing components close to the valve device under test, and M+K equals the number of replenishing components far from the valve device under test; N, M, and K are constants greater than or equal to 1; Based on the replenishment component replenishing the liquid supply channel of the liquid supply component and the continuous liquid supply of the liquid supply component, the liquid is continuously input into the valve device under test at the preset pressure value.

5. The valve device pressure stabilization test method according to claim 1, characterized in that, When the replenishing component replenishes the liquid supply component, the replenishing pressure of the replenishing component is greater than or equal to the instantaneous pressure at the connection point between the liquid supply component and the replenishing component. The replenishing component is configured to replenish the liquid supply component when the instantaneous pressure is lower than the replenishing pressure.

6. The valve device pressure stabilization test method according to claim 5, characterized in that, The pressure ratio of the liquid in the replenishment component to the liquid in the supply component is 0.7-0.8, and the pressure loss from the supply component to the connection point ensures that the instantaneous pressure at the connection point is not greater than the replenishment pressure of the replenishment component.

7. The valve device pressure stabilization test method according to claim 1, characterized in that, The execution-based multi-set pre-test loop process acquires multiple sets of pre-test parameters for the valve device under test, including: Based on the liquid being injected into the valve device under test for a preset test duration, at least a portion of the liquid fills the valve device under test and at least a portion of the gas is squeezed out of the valve device under test; Based on the extrusion of at least part of the gaseous material from the valve device under test, multiple sets of pre-test parameters of the valve device under test are obtained; wherein, the valve device under test has a first test pressure inside.

8. The valve device pressure stabilization test method according to claim 7, characterized in that, The process of obtaining multiple sets of pre-test parameters for the valve device under test based on the execution of multiple pre-test loops also includes: Based on the extrusion of at least a portion of the gaseous material from the valve device under test and the acquisition of the pre-test parameters, the mapping relationship is constructed, and the number of tests for the replenishment component is obtained based on the mapping relationship; The replenishment component replenishes liquid based on the number of tests, and the supply component continuously supplies liquid, so that the liquid is continuously input into the valve device under test at the preset pressure value; wherein, the valve device under test has a second test pressure inside; Because the second test pressure is greater than the first test pressure, the pressure unit inside the valve device under test undergoes elastic deformation. The pressure unit inside the valve device under test undergoes elastic deformation, and at least a portion of the gaseous material inside the valve device under test is discharged from the valve device under test. Based on the extrusion of at least a portion of the gaseous material from the valve device under test, the pre-test parameters of the valve device under test are obtained.

9. A valve device pressure stabilization test system, characterized in that, The valve device pressure stabilization test system, applicable to the valve device pressure stabilization test method according to any one of claims 1-8, comprises: The valve device under test includes a housing unit and a pressure unit; the housing unit includes a housing portion and an outlet port, an inlet port, and a storage chamber formed within the housing portion; wherein the outlet port and the inlet port can communicate with the storage chamber; A liquid supply assembly includes a liquid supply unit and a liquid supply passage connected to the liquid supply unit; A fluid replenishment assembly includes a fluid replenishment unit and a fluid replenishment passage connected to the fluid replenishment unit; wherein the fluid supply passage is connected to the fluid replenishment passage. The liquid outlet assembly includes a liquid outlet passage and a liquid outlet valve disposed on the liquid outlet passage; the two ends of the liquid outlet passage are respectively connected to the liquid supply passage and the liquid inlet of the valve device under test; in the preset state of the valve device pressure stabilization test system, the liquid supply assembly and / or the liquid replenishment assembly provide liquid to the liquid storage chamber, and the liquid in the liquid storage chamber can flow out from the liquid outlet, and the liquid acts on the pressure unit at a preset pressure value.

10. A valve device pressure stabilization test system according to claim 9, characterized in that, The pressure unit includes a pressure section and a support section, a first elastic section, and a second elastic section, all sleeved on the pressure section and located within the liquid storage cavity. The support section is located between the first elastic section and the second elastic section. The second elastic section connects the pressure section and the housing section respectively. The first elastic section has a gap between its radially away periphery from the pressure section and its axially adjacent periphery to the housing section. In the preset state, the liquid acts on the pressure section at the preset pressure value, causing the pressure section to move along the pressure direction and causing the first elastic section to deform along the outflow direction from its peripheral side away from the pressure section, gradually reducing the gap. The pressure direction is opposite to the outflow direction.

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